WEBC2-HEADWEBC2-HEAD

The WEBC2 malware family is designed to retrieve a Web page from a pre-determined C2 server. It expects the Web page to contain special HTML tags; the backdoor will attempt to interpret the data between the tags as commands. The WEBC2-HEAD variant communicates over HTTPS, using the system's SSL implementation to encrypt all communications with the C2 server. WEBC2-HEAD first issues an HTTP GET to the host, sending the Base64-encoded string containing the name of the compromised machine running the malware.